O. Bondoc
Institute of Animal Science, College of Agriculture and Food Science, University of the Philippines Los Banos

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Reasons for Culling in Relation to Longevity and Lifetime Efficiency of Landrace and Large White Sows in a Nucleus Breeding Farm in the Philippines O. Bondoc; J. Isubol
Tropical Animal Science Journal Vol. 45 No. 1 (2022): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5398/tasj.2022.45.1.30

Abstract

Information on the reasons for sow removal is limited and often unreported for nucleus breeding farms. This study analyzed the distribution of culling type (planned vs. unplanned) and culling reasons in relation to longevity – parity at culling (PAC) and productive herd life (PHL), and lifetime efficiency – lifetime pigs born alive (LPBA) and total pigs weaned (TPW) using data recorded from 2017 to 2019 by a local nucleus breeding farm. The study revealed a considerable amount of unplanned removal (84.1%) compared to planned culls, which is due to old age (11.4%) and poor farrowing performance (4.6%). The most common reasons for unplanned sow removal were reproductive failures (26.2%) and health disorders (23.4%), followed by physical defects (15.3%), leg/foot problems (10.8%), and mortality (8.5%). A high proportion (22.1%) of sows was culled at their first parity. The proportion of culled sows decreased up to parity 4, especially for unplanned sow removals due to reproductive failures, leg/foot problems, and mortality. Unplanned culling corresponded to lower PAC (3.8), PHL (459 days), LPBA (14.1 pigs/year), and TPW (12.4 pigs/year). Average PAC and PHL were significantly higher (p<0.05) for Large White sows (PAC= 5.2; PHL= 696 days) than Landrace sows (PAC= 4.6; PHL= 588 days). However, the LPBA and TPW were not significantly different between breeds. Information about sow removal could be used to develop management strategies to avoid unplanned culling in purebred sows and extend their productive life.
Fatty Acid Composition and Nutritional Indices/Ratios of Colostrum and Milk from Crossbred Goats in the Philippines O. Bondoc; N. A. Del Rosario; L. L. G. M. Del Rosario; D. N. Ramirez
Tropical Animal Science Journal Vol. 46 No. 2 (2023): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5398/tasj.2023.46.2.239

Abstract

Fatty acid (FA) profiles are important measures of the nutritional quality of goat’s milk that may impact human cardiovascular health and disease. This study is aimed to compare the FA composition and FA-based nutritional indices/ratios of goat colostrum and milk from crossbred goats in relation to published reports on milk FAs involving purebred goats from other countries. A total of 121 colostrum and milk samples collected on the 30th, 60th, and 90th day of lactation from 33 crossbred goats with Anglo Nubian or Boer sires were analyzed by gas chromatography. The major FAs with the highest proportion in both colostrum and milk were oleic acid (C18:1-n9c), palmitic acid (C16:0), myristic acid (C14:0), and stearic acid (C18:0). Oleic acid, palmitic acid, and myristic acid were significantly higher (p<0.05) in colostrum than in milk (i.e., 27.4% vs 16.8%–22.9%, 24.8% vs 17.8%–19.6%, and 9.6% vs 5.2%–7.4%, respectively). Stearic acid was comparable in colostrum (8.8%) and milk (7.6%–10.8%). Total SFA and MUFA were higher in colostrum than in milk. Colostrum and milk contained low levels (less than 1.5%) of polyunsaturated fatty acids (PUFAs) – omega-6 FAs [i.e., linoleic acid C18:2 n-6 and arachidonic acid C20:4 n-6] and omega-3 FAs [i.e., α-linolenic acid C18:3 n-3 and docosahexaenoic acid C22:6 n-3]. The SFAs (C12:0, C14:0, C16:0, and C18:0) in relation to total MUFAs and PUFAs are known to contribute to the increase in cardiovascular disease. Thus, milk from crossbred goats seems to be more beneficial for cardiovascular health because of its lower atherogenicity and thrombogenicity and higher hypocholesterolemic/hypercholesterolemic ratio than those reported for several transboundary and local breeds.