| Autor: |
Bayemi PH; Institute of Agricultural Research for Development, P O Box 2067, Yaounde, Cameroon, hbayemi@yahoo.fr., Nsongka MV, Leinyuy I, Webb EC, Nchadji JM, Cavestany D, Bryant M |
| Jazyk: |
angličtina |
| Zdroj: |
Tropical animal health and production [Trop Anim Health Prod] 2015 Jan; Vol. 47 (1), pp. 153-8. Date of Electronic Publication: 2014 Oct 23. |
| DOI: |
10.1007/s11250-014-0700-8 |
| Abstrakt: |
Seventy-two cows were selected for an on-farm study on the effect of feed supplementation before calving on milk production, ovarian activity and calf growth of Holstein, indigenous Red Fulani cows and their crosses. Pre-partum feed supplementation was done using cotton seed cake (80%), maize (18%), bone meal (1%) and kitchen salt (1% NaCl). Supplementation levels consisted of a low supplementation fed at 1 kg per animal per day and high supplementation fed at 2 kg per animal per day. In addition, Red Fulani cows received the supplements in two different ways namely a pre-partum supplementation consisting of 1 kg per cow per day and pre- and post-partum supplementation consisting of 1 kg per cow per day before calving and 1 kg per cow per day post-partum up to 30 days after calving. Blood samples were analysed using ELISA Progesterone kits to determine the length of post-partum anoestrus. Results show that pre-partum levels of feeding did not have any effect (P > 0.05) on body condition score (BCS) at 12 weeks after calving, calf birth weight, average daily weight gain of calves, milk production and post-partum anoestrus. High BCS at calving was shown to influence BCS at 12 weeks of lactation. Holstein cows had bigger calves (P < 0.01) at birth (45 kg) compared to traditional cows (36 kg) and crosses (34 kg). There was little benefit of pre-partum supplementation on the parameters investigated in this study. Consequently, low income farmers are advised to concentrate their efforts of supplementation early in lactation. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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