Impact of concentrate supplementation during early lactation on the performance of grass fed, twin suckling ewes and their progeny

Campion, F. P.; McGovern, Fiona; Lott, Stephen; Creighton, P.; Boland, T. M.

doi:10.1016/j.livsci.2017.05.024

Cited by 5 publications

(3 citation statements)

References 39 publications

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“…However, while the differences were not significant, the numerically lower production of the PRGWC swards during the summer and the higher production from the 6S sward in the autumn may account for the differences in annual yield observed. The absence of an effect of sward type on seasonal production is critical in the first two rotations during the spring as farmers align lambing to coincide with grass growth in mid‐season sheep production systems (Brereton, ); therefore, high‐quality herbage is required in spring for the ewe in early lactation (Campion, McGovern, Lott, Creighton, & Boland, ). Lambs grazing these swards demonstrated elevated growth rates to six weeks post‐partum indicating increased milk yield and/or improved milk composition of ewes grazing the PRGWC, 6S and 9S swards, suggesting enhanced nutritional status of these animals in early lactation (Grace et al., unpublished).…”

Section: Discussionmentioning

confidence: 99%

The effect of increasing pasture species on herbage production, chemical composition and utilization under intensive sheep grazing

Grace

Boland

Sheridan

et al. 2018

Grass and Forage Science

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A complete randomized design was used to investigate the effect of increasing pasture species on herbage production, chemical composition and utilization under intensive sheep grazing. Four experimental farmlets were established, namely perennial ryegrass (Lolium perenne) only, receiving 163 kg N ha−1 year−1 (PRG); a perennial ryegrass and white clover (Trifolium repens) sward (PRGWC); a six species sward containing two grasses, two legumes and two herbs (6S); and a nine species sward containing three grasses, three legumes and three herbs (9S), each receiving 90 kg N ha−1 year−1. Ewes (12.5 ewes ha−1) and lambs rotationally grazed each farmlet from turnout post‐lambing until housing. Target pre‐grazing herbage mass (above 4 cm) was 1,200 kg dry‐matter (DM) ha−1, Target post‐grazing sward height was 4 cm for all rotations. Herbage samples were collected for DM yield, botanical and chemical composition determination at each grazing. Annual DM production of the 6S, 9S and PRG swards was similar (10.3, 9.9 and 9.9 ± 0.5 t DM ha−1, respectively) despite differences in N application. The 6S sward, however, had greater annual DM production compared to the PRGWC sward (9.1 t DM ha−1, p < 0.05). Herb proportions decreased in the 6S and 9S swards from 2015 to 2016 (p < 0.05) resulting in increased proportions of grass in these swards (p < 0.05). In conclusion, the PRGWC, 6S and 9S swards produced similar annual herbage DM from lower N inputs to PRG swards; however, maintaining the proportions of herbs is a challenge under intensive sheep grazing.

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Section: Discussionmentioning

confidence: 99%

The effect of increasing pasture species on herbage production, chemical composition and utilization under intensive sheep grazing

Grace

Boland

Sheridan

et al. 2018

Grass and Forage Science

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“…Energy intakes above the NRC (2007) can be beneficial during pregnancy and lactation by improving the behavior of the ewe with the lamb in the first hours after birth, a greater amount of colostrum, and the ewe's weight and body condition score at weaning (Campion et al, 2017;McGovern et al, 2015a;McGovern et al, 2015b). Similarly, increasing the energy content of the diet confers productive benefits, such as higher ovulation rate, a shorter interval between births, earlier pubertal age, and lower embryo loss (Rae et al, 2002;Scaramuzzi et al, 2006;Donnem et al, 2020), better fetal growth, and higher birth weaning, and slaughter weights (Kenyon and Blair, 2014;McGregor, 2017).…”

Section: Introductionmentioning

confidence: 99%

Economic performance of high-energy diets and supplementation with chromium propionate or calcium salts of palm oil in ewes’ production

Brochine¹,

Brochine²,

Nacimento³

et al. 2022

Revista Brasileira De Zootecnia

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The experiment aimed to analyze the economic viability of using highenergy diets and the supplementation of chromium propionate or calcium salts of palm oil in the diet of ewes from the late gestation until the end of lactation. Seventy-two ewes of Santa Ines × Dorper crossbreeds were allocated to five treatments: CTL (n = 14) with 100% of NRC recommendation for metabolizable energy per kg dry matter intake (ME/kg DMI), LOW (n = 14) with 90% ME/kg DMI, HIGH (n = 15) with 110% ME/kg DMI, Cr (n = 15) HIGH diet plus chromium propionate, and FAT (n = 14) HIGH diet plus calcium salts of palm oil. Based on the performance data, a short-term analysis was performed for a module of 1000 ewes, evaluating costs, revenues, and profitability, and long-term analysis was performed by an additional cash flow of 120 months. The CTL and FAT treatments were not viable due to higher costs and lower revenues, and they also had a negative net present value (NPV) and internal rate of return (IRR). The LOW treatment, despite lower costs and positive profitability, had a negative NPV (-$872.90) and IRR (1.85%) that was below the discount rate, making it unprofitable in the long run. The HIGH and Cr treatments were considered feasible because they had lower unit costs and higher profitability, in addition to a high NPV ($64,894.11 and 104,902.05, respectively) and a higher IRR (9.03% and 13.65%, respectively) than the discount rate. The use of high-energy diets, with added chromium propionate, promoted better performance and, consequently, better economic return.

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“…So many researchers have an opinion to use a genetic pool of aboriginal individuals with subsequent improved it by foreign genes of highproductive sheep. It is showed as a single effective and possible way to increase up meat, meat-wool, and wool productivity of sheep breeding in Russia [2,[4][5][6][8][9][10][15][16][17]22,23,26,[29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Katumy Breed is a New Russian Sheep Breed

Dmitrieva¹

2020

NIDOC-ASRT

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T HE article is a review of new sheep breed for the regions with not friendly weather conditions likein the NorthWestern District of Russian Federation. The economic development of such region needs new resolves, and in agriculture areatoo. The represented breedhad beencreatedforincreasing meat resources, to borna local economically advantageousmeat-productive sheep breed. So it was made an improvement of the exterior and productive qualities of aboriginal Romanov sheep breed due to imported American Katahdin meat breeding muttons. It was applied the absorption cross-method at the first breeding stage. The next was a rigorous selection and drafting of the animal's desired type, identifying outstanding rams. Katumy sheep-breed was got up of reproductive breeding of the factory lines. New created-in sheep breed has a lot of advantages such as excellent fertility and meat increment, good herd instinct, and milkiness. All of thesemake Katumy sheep breed the best choice for agriculture in regions with severe conditions for manufacture and cattle breeding. It becomespossible to make breeding not only successful but faster and economically advantaged. Rams of Katumy meat-breed in the elite group have an average live weight of 105.53 kg; ewes were little lesser-70.03 kg. The ewes of the first and second classes haveweight growth up to 63.05 kg and 50.05 kg, respectively. Constitutional and productive features demonstrated in Katumy meat breed sheep had characterized by a large size, a strong and harmonious constitution with pronounced meaty forms. All of these represented facts give a possibility to rise and have a stable development of economically depressed regions.

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Impact of concentrate supplementation during early lactation on the performance of grass fed, twin suckling ewes and their progeny

Cited by 5 publications

References 39 publications

The effect of increasing pasture species on herbage production, chemical composition and utilization under intensive sheep grazing

The effect of increasing pasture species on herbage production, chemical composition and utilization under intensive sheep grazing

Economic performance of high-energy diets and supplementation with chromium propionate or calcium salts of palm oil in ewes’ production

Katumy Breed is a New Russian Sheep Breed

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