Effects of particle size and dietary nitrogen content on the nutritive value of pea-based diets in mid-lactation goats

Giger-Reverdin, Sylvie; Maaroufi, C.; Peyronnet, Corinne; Sauvant, Daniel

doi:10.1016/j.anifeedsci.2015.09.013

Cited by 7 publications

(6 citation statements)

References 33 publications

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“…Tabulated PDI values of the diets calculated from in vitro data have to be increased by the addition of zeolite. Thus, the nutrients available for the protein synthesis of rumen micro-organisms probably led to similar levels of amino acids to the intestines (Giger-Reverdina et al, 2015), whereas in this study, PDIN was greater than the PDIE, indicating that dietary rumen degradable N was suitable, which could explain the high correlation (r = 0.96; P =0.03) between PDIE and daily live weight gain.…”

Section: Discussioncontrasting

confidence: 48%

Effect of natural zeolite on live weight changes, ruminal fermentation and nitrogen metabolism of ewe lambs

Roque-Jiménez¹,

Pinos-Rodríguez²,

Rojo-Rub³

et al. 2019

SA J. An. Sci.

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The objective of this study was to evaluate the effects of natural zeolite on the performance and nitrogen metabolism of Rambouillet ewe lambs. Forty Rambouillet ewe lambs with an initial weight of 41.06 ± 3.9 kg were randomly assigned to one of four experimental diets, namely 0, 20, 40 and 60 g of natural zeolite (Comercializadora Omega® México) per kg dietary dry matter in a completely randomized design and sixteen ewe lambs were used in a 4 x 4 Latin square metabolism study. Performance was not modified by natural zeolite levels in the diet, and daily gain showed a quadratic response. Ammonia concentration at 8 and 12 hours increased linearly with zeolite. Zeolite increased ruminal pH linearly at 8 and 12 hours. Acetate and butyrate presented a quadratic response, and total ruminal volatile fatty acid concentration was linearly increased by zeolite. Nitrogen retention showed a linear and quadratic response to zeolite. The estimated fractions of protein digested in the small intestine, when rumen-fermentable energy was limiting (PDIE) and when rumen-fermentable nitrogen was limiting, showed a linear and quadratic response to zeolite. PDIE was positively correlated (r = 0.96) with average daily gain.

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Section: Discussioncontrasting

confidence: 48%

Effect of natural zeolite on live weight changes, ruminal fermentation and nitrogen metabolism of ewe lambs

Roque-Jiménez¹,

Pinos-Rodríguez²,

Rojo-Rub³

et al. 2019

SA J. An. Sci.

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“…By analysing the nutritive values of meat lipids we found no significant differences between groups. Nutritive values of meat lipids were within values of 2 and 3, also reported by Facciolongo et al (2015). The above justifies partial replacement of soybean meal with peas in feed mixtures for the lambs in organic farming.…”

Section: Resultssupporting

confidence: 54%

“…The above authors found significantly higher levels of drip losses in meat of lambs that had consumed the feed mixture with peas compared to the one with soybean meal (1.6 and 1.2 : 0.8 %). Facciolongo et al (2015) and Colonna et al (2014) also did not determine significant changes in the physical characteristics of carcass and meat in lambs fed with rations where soybean meal was replaced by peas.…”

Section: Resultsmentioning

confidence: 94%

“…In previous research focusing on complete or partial replacement of soybean meal with peas in rations of lambs, there were no significant differences in the production properties and slaughtering quality of lamb carcasses (Lanza et al, 2003;Colonna et al, 2014;Facciolongo et al, 2014 and2015). There are just a few studies that have examined the blood metabolic profile of lambs fed with rations where soybean meal has been replaced with peas (Lestingi et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Production traits, blood metabolic profile and fatty acids of meat and tallow in response to the partial replacement of soybean meal with peas in organic lambs' feed

et al. 2017

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Abstract. The aim of this research was to investigate the production traits, blood metabolic profile and fatty acids of meat and tallow in response to the partial replacement of soybean meal with peas in lambs' feed. The research was conducted on 30 Merinolandschaf lambs of 90 days' age over 30 days. Lambs were fed with feed mixture (1000 g day −1 lamb −1 ). In the control group protein supplement was soybean meal (SC), while in the experimental groups soybean meal was partially replaced with 13 % peas (P13) and 26 % peas (P26). In the haematological parameters of lambs' blood, concentrations of minerals (Ca, P, Mg and Fe) and biochemical parameters (urea, glucose, total protein, albumin, globulins, cholesterol, HDL, LDL, triglyceride, β-hydroxybutyrate and non-esterified fatty acids) as well as enzyme activity (ALT, AST, ALP, GGT and CK) were determined. After slaughter, carcass development was measured. Samples of m. semimembranosus and tallow were taken in which concentrations of fatty acids were analysed. Values of meat pH and colour were taken 45 min 24 h post mortem, and water-holding capacity was calculated. By analysing the production properties of lamb, we found that slaughtering characteristics of lamb carcasses, haematological and most of the biochemical indicators did not differ. Urea concentrations were reduced in the blood of lambs in P13 and P26. Concentration of C18:2 n-6 increased in tallow of lambs of group SC compared to group P26 of lambs. The above-mentioned results indicate the possibility of partial replacement of soybean meal with peas in lambs' diets in organic farming without changes in production.

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“…Improving microbial capture and utilisation of ammonia in the rumen is influenced by the quantity and solubility of both protein and carbohydrate sources. In diets with adequate crude protein concentration, increasing the solubility of protein has been shown to increase urinary-N losses (Wohlt et al 1976;Giger-Reverdin et al 2015). A review of high sugar ryegrass by Edwards et al (2007) revealed that increasing the balance between WSC and CP in perennial ryegrass was associated with a reduction in urinary-N excretion.…”

Section: Balancing Soluble Carbohydrate and Proteinmentioning

confidence: 99%

Can alternative forages substantially reduce N leaching? findings from a review and associated modelling

Bryant

Snow

Shorten

et al. 2019

New Zealand Journal of Agricultural Research

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Nitrogen (N) leaching losses from grazed pasture systems pose a risk to the environment with mitigation strategies urgently required to achieve regulatory limits. There has been increased interest in alternative forages to manipulate excretion of urinary-N of livestock. This review summarises research on key forage attributes which affect the pattern of urine-N excretion. The literature showed an opportunity to alter both N concentration and moisture concentration of forages to reduce urine patch N loading. Complementary mitigations of extending the grazing rotation and reducing fertiliser were tested in simulations in addition to a diuresis effect on nitrate leaching in pastoral dairy systems. Findings suggested that forage species alone could not substantially reduce (by more than 20%) nitrate leaching. Combining all forage, management and systems-based solutions led to the greatest reductions in nitrate leaching, 59 and 31% for Waikato and Canterbury. Nonetheless, reductions in N loss came at the expense of pasture productivity which will likely affect profitability and farmer adoption of this suite of solutions in the absence of other drivers. The role of plant secondary metabolites in microbial dynamics has implications on N recycling in soil and rumen environments and this was identified as an area for further research.

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Effects of particle size and dietary nitrogen content on the nutritive value of pea-based diets in mid-lactation goats

Cited by 7 publications

References 33 publications

Effect of natural zeolite on live weight changes, ruminal fermentation and nitrogen metabolism of ewe lambs

Effect of natural zeolite on live weight changes, ruminal fermentation and nitrogen metabolism of ewe lambs

Production traits, blood metabolic profile and fatty acids of meat and tallow in response to the partial replacement of soybean meal with peas in organic lambs' feed

Can alternative forages substantially reduce N leaching? findings from a review and associated modelling

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