The effects of alternative weaning strategies on lamb health and performance

Campbell, Braden J; Pullin, Allison N.; Pairis‐Garcia, Monique D.; McCutcheon, Jefferson S; Lowe, G. D.; Campler, Magnus R.; Fluharty, F. L.

doi:10.1016/j.smallrumres.2017.09.006

Cited by 16 publications

(11 citation statements)

References 45 publications

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“…Jing et al (2017) conducted a study with ram lambs on pasture with no supplementation and supplemented with mineral blocks or concentrate and reported a difference in weight gain between treatments, with the animals fed on salt block having an intermediate performance. Similar to this present study, Campbell et al (2017), assessed the difference between mineral salt in block and in powder in the diet of lambs and found no difference in weight gain in stall-feeding, nor in feed conversion or consumption of dry fodder. However, the quality of the mineral salt and its balanced use can improve performance characteristics and carcass weight (GARG et al, 2008;KEADY et al, 2017).…”

Section: Experiments 2: Lambs In Finishing Phasesupporting

confidence: 84%

“…Sanitary control of internal parasites in sheep was accomplished through a dose of anthelmintic prior to the testing period, with monitoring every 21 d using the FAMACHA method (PETERSSON, 2014;CAMPBELL et al, 2017). In the same time-span, sheep were weighed on electronic scales and their physical condition was assessed on a scale 1-5, according to the method proposed by Kenyon et al (2014), where 1 is a very thin animal, 2 thin, 3 normal, 4 fat and 5 very fat.…”

mentioning

confidence: 99%

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Block of mineral salt in the diet of sheep and lambs and their effects on health and performance

2018

Aust. J. Basic & Appl. Sci.

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Sheep farming is growing worldwide (FAOSTAT, 2016), including in tropical areas, where production of dry forage is high; however, it has a lower content of nutrients in comparison with forage of temperate climates. Overcoming nutritional deficiency of animals fed tropical forages is a challenge, especially during dry seasons. The grazing method is used to maximize forage production and reduce feeding costs. However, due to the high nutritional needs of lambs in the growing stage, they can be stall-fed at finishing, as they are slaughtered young and have a greater nutritional need than ewes do. Supplements to grazing sheep are used to enhance animal performance, as well as to improve animal health (PEREIRA et al., 2017). Supplementation with minerals is critical to animal performance and health due to mineral deficiencies in the soil-plant system, which directly affect animal nutrition. Mineral deficiency negatively influences animal growth, reproduction, immune system, cellular replication, skeletal progress, and energetic metabolism (WANG et al., 2009; HAENLEIN; ANKE, 2011; OVERTON; YASUI, 2014). The mineral supplementation is traditionally offered as powder, which limits its adequate use due to its hygroscopic characteristics. Multi-nutritional block is an alternative for mineral supplementation for sheep production systems. The use of minerals in block influence positively parameters, such as feeding efficiency, milk production, reproductive performance (KIOUMARSI et al., 2011; WANG et al., 2016). The use of mineral blocks is easy and efficient, and sheep can receive the necessary requirements of oligoelements to ensure health and optimum productivity, with reports of various benefits for reproduction, reduction of mortality rate, greater economic return (WANG et al., 2016). We hypothesized if sheep and lambs have good intake of mineral salt in block and if its consumption is beneficial to their health, performance and skeletal quality. The objective of this study was to assess the effects of mineral supplementation in a block format salt on the consumption, performance, skeletal characteristics and hematological and biochemical parameters of sheep and lambs reared under tropical conditions. MATERIAL AND METHODS The experiment protocol for the present experiment was approved by the Animal Ethics and Well-being Committee of the University of São Paulo, No. 8755210515, issued on July 7, 2015. The study was divided into two experiments. The first experiment comprised pregnant sheep reared under the grazing system and the second with stall-finished lambs. Both were conducted in the Faculty of Animal Science and Food Engineering of the

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Section: Experiments 2: Lambs In Finishing Phasesupporting

confidence: 84%

mentioning

confidence: 99%

Block of mineral salt in the diet of sheep and lambs and their effects on health and performance

2018

Aust. J. Basic & Appl. Sci.

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“…Forages in both pastures were primarily dominant (90%) in tall fescue ( Schedonorus arundinaceus (Schreb.)). Paddocks were rotationally grazed every three days as described by Campbell et al (2017) . Lambs assigned to the NS and ES treatment groups were supplemented with a plant-derived protein rich supplement ( Table 1 ).…”

Section: Animals Housing and Husbandrymentioning

confidence: 99%

The effects of protein supplementation and pasture maintenance on the growth, parasite burden, and economic return of pasture-raised lambs

Campbell

Marsh

Parker

et al. 2021

Translational Animal Science

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The objective of this experiment was to evaluate the impact of protein supplementation and pasture contamination with gastrointestinal nematodes on the mitigation of parasitic infection in grazing lambs. We hypothesized that there would be no difference between protein supplementation and newly sown pasture in evaluating lamb growth and health parameters associated with parasitism. Furthermore, we questioned if there would be an interaction between protein supplementation and pasture type. A total of 192, 60-day old lambs (28.3 ± 5.1 kg) were randomly assigned to one of four treatments: 1.) new pasture without supplementation (NN); 2.) new pasture with supplementation (NS); 3.) established pasture without supplementation (EN); and 4.) established pasture with supplementation (ES) and grazed for 112 days. Lambs were supplemented at a rate of 1% body weight/day. Supplemented lambs had greater body weight (BW) and average daily gain (ADG) when compared with non-supplemented lambs (P < 0.04). Additionally, lambs on newly sown pasture demonstrated greater BW and ADG when compared with lambs grazing on established pasture (P < 0.05). For lamb health, lambs in the EN treatment group had the greatest FAMACHA © eye scores and lowest packed cell volume (PCV) over the course of the 112-day grazing period (P < 0.05). Moreover, NS and ES treatment lambs demonstrated similar FAMACHA © eye scores when compared with NN treatment lambs; however, NN treatment lambs showed lower PCV when compared with NS and ES treatment lambs (P < 0.05). In evaluating fecal egg counts (FEC), lambs on new pasture or given supplement demonstrated lesser FEC when compared with those lambs on established pasture or not given supplement (P < 0.05). Sixty-four lambs were harvested to evaluate total abomasum nematode counts which demonstrated that H. contortus represented approximately 80% of total nematodes. Furthermore, based upon gross margin analysis, lambs given a protein rich supplement on pasture had a 9.3 kg increase in lamb BW whereas newly sown pasture had a 1.3 kg increase in lamb BW. A protein rich supplement given to lambs grazing pastures contaminated primarily with H. contortus or placing lambs on newly sown pasture increases lamb BW and improves parasite resiliency. Selection of parasite management strategies may be influenced by cost of production and market opportunities.

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“…Furthermore, in an interview study with representatives of the retail, foodservice, and purveyor segments of the lamb meat industry in the United States, Hoffman et al (2016) reported that the top three preference factors associated with a decision to purchase lamb were eating satisfaction, origin of the lamb indicating locally grown, and sheep raising that included being grass-fed, respectively. However, in the Midwest, Haemonchus contortus infestations that occur during the forage growing season make grazing management difficult and have negative health impacts on the grass-fed lambs (Campbell et al, 2017). Thus, information is required to determine the most efficient way to use harvested forages for lamb production.…”

Section: Introductionmentioning

confidence: 99%

Effects of feeding corn silage, pelleted, ensiled, or pelleted and ensiled alfalfa on growth and carcass characteristics of lamb

Fluharty¹,

Zerby²,

Lowe³

et al. 2017

SA J. An. Sci.

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Two experiments were conducted to evaluate the effects of corn silage (CS) and alfalfa (pelleted (AP), haylage (AH), or combination (APH)) on lamb growth and carcass characteristics. The objective of Experiment 1 (Exp. 1) was to compare AH to CS in lamb feedlot diets on lamb growth and carcass characteristics. Eighty lambs were used in a 56 day experiment with a randomized complete block design. The objective of Experiment 2 (Exp. 2) was to determine the effects of alfalfa form, AP, AH or AHP, on animal performance and carcass characteristics. Seventy two lambs were used in an 82 day experiment with a randomized complete block design. In Exp. 1, lambs offered AH consumed 23.5% more feed on a daily basis than lambs offered CS. However, lambs fed CS gained weight 21.3% faster than lambs fed AH (259 versus 213 g/day, respectively). Additionally, lambs fed CS were 50.4% more efficient in converting feed to gain compared with lambs offered AH (0.173 versus 0.115 kg gain/kg feed, respectively). In Exp. 2, AP resulted in a greater dry matter intake (DMI) and average daily gain (ADG), and fewer days on feed than with AH. The combination of pellets + haylage resulted in a greater DMI, ADG, and fewer days on feed compared to AH alone. Therefore, there was an inverse relationship between both forage particle size and diet moisture content with DMI. There was no difference in daily efficiency of gain due to the form of alfalfa. Average daily gain, days on feed, and DMI are economically important criteria that differ due to the form of alfalfa even when feed efficiencies are similar. ______________________________________________________________________________________

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The effects of alternative weaning strategies on lamb health and performance

Cited by 16 publications

References 45 publications

Block of mineral salt in the diet of sheep and lambs and their effects on health and performance

Block of mineral salt in the diet of sheep and lambs and their effects on health and performance

The effects of protein supplementation and pasture maintenance on the growth, parasite burden, and economic return of pasture-raised lambs

Effects of feeding corn silage, pelleted, ensiled, or pelleted and ensiled alfalfa on growth and carcass characteristics of lamb

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