Effect of Dietary Fiber Level on the Performance and Carcass Traits of Mong Cai, F1 Crossbred (Mong횞Cai??Yorkshire) and Landrace횞Yorkshire Pigs

Abstract

:The effects of feeding diets containing 20% (L) or 30% (H) neutral detergent fiber (NDF) (DM basis) on performance and carcass traits were studied in three breeds of pig, including pure Mong Cai (MC), crossbred Landrace×Yorkshire (LY) and crossbred MC×Yorkshire (F1). The experiment had a factorial design with two factors, breed and diet. Eighteen piglets of each breed (60±3 days) were randomly allocated to three treatments: L-L, low fiber diet in both growing and finishing periods; L-H, low and high fiber diet in the growing and finishing period, respectively; and H-H, high fiber diet in both periods. The diets were iso-energetic and iso-nitrogenous within feeding period. The main fibrous ingredients of the diets were rice bran and cassava residue. There were no effects of fiber level on daily dry matter feed intake (DMI), expressed as g/kg metabolic body weight (BW 0.75 ), in both feeding periods (p>0.05). DMI was highest for MC, followed by F1 and LY (p<0.001). Average daily gain (ADG) in L-L and L-H was higher than in H-H in the growing period (p<0.001) and overall (p<0.05), while feed conversion ratio (FCR) was higher in H-H than in L-L and L-H in the growing period (p<0.05) and overall, but no significant differences between treatments were found in the finishing period. In both periods, Landrace×Yorkshire had the highest ADG and the lowest FCR, followed by F1 and Mong Cai (p<0.001). There were no interactions between breed and diet for performance and carcass traits. Carcass and dressing percentage was lower for L-H and H-H than for L-L (p<0.05). There were no significant differences among treatments in back fat thickness and lean meat percentage, or in crude protein and ether extract contents of lean meat. Carcass, dressing and lean meat percentage was highest for LY, lowest for MC and intermediate for F1 (p<0.001). It can be concluded that feeding a high fiber diet in the growing period reduced pig performance, but there was no effect in the finishing period. Pure Mong Cai pigs are not particularly suitable for meat purposes, although the F1 cross with Large White had reasonably good growth performance and carcass quality.

Characterization of smallholder pig breeding practices within a rural commune of North Central Vietnam

“…That said, the estimated litter size is still in line with that found 3 3 Total 68 19 11 2 100 a Determined using data from 96 households who either had piglets present at the time of survey or piglets exiting during the 12-month period prior to survey Fig. 4 A sunflower plot (where multiple points are shown as Bpetals^) of parity of local breed female pigs on age, where age was given in months up to 12 months of age and then in half-yearly intervals in other studies, which generally ranged between 10 and 14 for local Mong Cai over all parities (Lemke et al 2006;Len et al 2008;Tu et al 2010; Van and Duc 1999) and was higher for Mong Cai compared to a Mong Cai × Large White cross (Len et al 2008). Stillbirth rates were low at 0.015 (with a standard error of 0.003) for the local breed females and 0.008 (0.004) for the cross-bred females.…”

Pengaruh Penggunaan Sekam Padi Dalam Ransum Berbasis Limbah Pangan Hotel Kering Terhadap Pertumbuhan Dan Karkas Babi

“…Hasil ini disebabkan karena konsumsi pakan ternak babi kelompok R1 merupakan yang paling tinggi. Hasil ini sama dengan yang dilaporkan oleh Jin et al (1994), dan Len et al (2008), yaitu pemberian serat pada konsentrasi yang paling tinggi akan menurunkan berat akhir ternak babi.…”

“…Tingginya konversi pakan kelompok R3 disebabkan karena kandungan sekam padi yang tinggi dalam ransum, sehingga berakibat pada rendahnya tingkat pertumbuhan ternak babi. Hasil penelitian ini sama dengan yang pernah dilaporkan oleh Shriver et al (2003) dan Len et al (2008) yaitu penggunaan serat tinggi dalam ransum babi akan meningkatkan nilai konversi pakan yang diperoleh.…”

“…Hasil ini sejalan dengan data berat badan akhir dari setiap kelompok pada penelitian ini, karena berat potong babi sangat dipengaruhi oleh pertumbuhan babi selama pemeliharaan. Hasil ini sesuai dengan yang dilaporkan Knowles et al (1998) dan Len et al (2008) Len et al (2008), yaitu pemberian serat pada konsentrasi tinggi dalam ransum akan menurunkan berat karkas ternak babi masa pertumbuhan. Persentase karkas kelompok R0, R1, dan R2 lebih tinggi (P<0,05) daripada R3 (Tabel 3).…”

“…Hasil ini disebabkan karena berat karkas ternak babi kelompok R3 jauh lebih rendah daripada ketiga perlakuan lainnya. Hasil ini sesuai dengan penelitian Knowles et al (1998) dan Len et al (2008) yang mendapatkan bahwa pemberian serat dalam ransum ternak babi pada konsentrasi yang tinggi akan menurunkan persentase karkas segar yang dihasilkan.…”