Evaluation of reference lactation length in Chios dairy sheep
Animal, 2019 Definition and establishment of a fixed reference lactation length could provide useful tools for on-farm comparison of ewes and flock management as well as genetic evaluations for the breeding programme. The objectives of this study were to (i) evaluate
Z. Basdagianni, E. Sinapis, G. Banos
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Extending lactation length: consequences for cow, calf, and farmer. [PDF]
J Anim Sci, 2022 Abstract Traditionally, a 1-yr calving interval is advised to farmers from an economical point of view, to realize a yearly peak in milk yield. A 1-yr calving interval, however, implies a yearly event of drying-off, calving and start of lactation, which are all associated with an increased risk for diseases and disorders.
van Knegsel ATM +4 more
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Milk production and lactation length in Ankole cattle and Ankole crossbreds in Rwanda. [PDF]
Trop Anim Health Prod, 2020 AbstractThis study assessed daily milk yield (DMY), 100-day (MY100), and 305-day (MY305) milk yield, and lactation length (LL) in purebred Ankole cattle and Ankole crossbreds, and the influence of environmental factors on these traits. Milk yield data were obtained for 865 cows and 1234 lactations and analyzed using a mixed linear model.
Manzi M +5 more
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Determinants of prolonged weaning-to-service interval in primiparous Landrace × Yorkshire sows under tropical conditions: Impact of age at first farrowing, lactation length, and litter size at weaning [PDF]
Veterinary WorldBackground and Aim: Primiparous sows are particularly vulnerable to prolonged weaning-to-service interval (WSI), which negatively impacts reproductive efficiency and farm profitability.
Nguyen Hoai Nam +4 more
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Effects of dry period length and dietary energy source on lactation curve characteristics over 2 subsequent lactations [PDF]
Journal of Dairy Science, 2016 This study evaluated the effects of dry period (DP) length and dietary energy source on lactation curve characteristics over 2 subsequent lactations. It also evaluated the relationships of energy balance or metabolic status in early lactation with lactation curve characteristics in dairy cows. Holstein-Friesian dairy cows (n=167) were assigned randomly
Josef Johann Gross +2 more
exaly +5 more sources
Correlation between teat length and lactation periods on the level of subclinical mastitis occurrence in Sappy Valley Farm [PDF]
E3S Web of Conferences, 2022 This study aims to determine the correlation between dairy cattle teat length at several lactation periods and subclinical mastitis profile. This study used 43 dairy cattle at several lactation periods.
Siagian Tetty Barunawati +1 more
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Analysis of lactation feed intakes for sows with extended lactation lengths [PDF]
Translational Animal Science, 2017 AbstractThe objectives of this research were to quantify and model daily feed intakes to 28 d of lactation in modern sows. A total of 4,512 daily feed intake (DFI) records were collected for 156 Hypor sows from February 2015 to March 2016. The mean lactation length was 27.9 ± 2.0 d. The data included 9 parity 1, 33 parity 2 and 114 parity 3+ sows. Data
Cabezón, F. A. +3 more
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THE EFFECT OF GRADING UP ANKOLE CATTLE OF BURUNDI WITH SAHIWAL ON MILK PRODUCTION PERFORMANCE OF COWS [PDF]
Journal of Animal and Poultry Production, 2000 Total of 510 lactation records, representing five successive parities, were collected on 102 cows (20 Ankole and 82 Sahiwal x Ankole crosses) to study the effect of grading up Ankole cattle of Burundi with Sahiwal breed on both total milk yield and ...
H. Nimenya, S. Rashwan, M. Anous,
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Fertility and milk production on commercial dairy farms with customized lactation lengths [PDF]
Journal of Dairy Science, 2021 Drying-off, calving, and start of lactation are critical transition events for a dairy cow. As a consequence, most animal health issues occur during these periods. By extending the voluntary waiting period for first insemination after calving, calving interval (CInt) can be extended, with possible positive effects for fertility and health.
Burgers, E.E.A. +5 more
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Mljekarstvo, 2023 This study aimed at determining the association between reproductive indexes and the total milk yield in non-planed lactations ≥600 days in sub-fertile Holstein cows treated or not with recombinant bovine somatotropin (rbST) and experienced prolonged ...
Marcos Luna +5 more
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