To finest see the aftereffect of the newest crossbreeding on intimate precocity regarding hybrid dogs, brand new AFC try examined predicated on: hybrid type of, race of sire mothers (bull and you will inseminated regional cows), hybridization level and stock facilities
Data extracted from the analysis of herd records were entered in Excel. The descriptive statistical analysis of the age at first calving (calculation of frequencies, means, standard deviations, minimum and maximum) was made with the XLSTAT software (6.1.9 release). These parameters were analyzed by ANOVA and the results were compared using the Newman-Keuls test. Differences were considered significant for p < 0.05.
New mean ages in the beginning calving for everyone breeds make are ± months, symbolizing as much as three years (24 months 11 days 19 weeks ± eleven days a day). The minimum is actually months plus the restriction is actually weeks. To own 50% out of heifers, first calving is at months. The initial characteristics took place normally at the ± months ( so you can months).
The newest imply AFC of the crossbreeds try lower than men and women advertised among the Zebu beneath the tropics at the more 40 months advertised in lot of training ( Rahman ainsi que al., 2016 ; Tellah et al., 2015a , 2015b ; Bashir and you will Este Zubeir, 2013 ; Sokouri ainsi que al., 2010 ; Bayemi et al., 2005 ). , 2015 ). Specific people has stated results really alongside all of our observation with the different crossbreeds when you look at the Africa, in spite of cow types included in brand new try: 34 months one of many Montbeliard crossbreeds inside Algeria ( Madani and you will Mouffok, 2008 ) and you can Morocco ( Srairi and you can Mousili, 2014 ), ± 0.43 months in the Girolando crossbreed from inside the Benin ( Doko ainsi que al., 2012 ). It absolutely was a similar to the Holstein-Friesian hybrid cattle in the Ethiopia on thirty six.cuatro ± step one.seven months, brand new Borgou and Lagunaire types from the thirty six.step one ± 6.31 months from inside the Benin ( Adamou-Ndiaye mais aussi al., 2003 ) and in the fresh new Azawak Zebu from the 36.5 ± 4.ten and you may ± 13 days for the Niger ( Achard and you may Chanono, 2006 , 1997 ).
Our observation try higher than those people claimed by Genzebu ainsi que al. (2016) among crossbreed cows inside the Kenya (26.nine ± 5.cuatro and twenty seven.0 ± 3.7 days). It had been somewhat much better than brand new findings from the Ngodigha et al. (2009) away from 29.eight ± dos.5 months certainly crossbreeds (Holstein x Bunadji) inside Nigeria, Ben Salem ainsi que al. (2009) out-of 31.7 ± cuatro.12 months inside the Holstein for the Tunisia and you will Srairi and you will Mousili (2014) out-of 30 days inside the Montbeliard for the Morocco. Specific adaptation products of this AFC was basically analyzed to attain the comments.
One of the various other crossbreeding systems recognized ( Table 1 ), this new Fulani Zebu (FZ) inseminated with sperm out of Montbeliard (MB x FZ) and Alps Brownish (Abdominal x FZ) keeps delivered the most precocious corssbreeds (earliest calving on 2 yrs) (5%). If you are, the new inseminations away from Fulani Zebu cattle towards the semen out of Holstein (HT x FZ) and you may regarding Tarentaise (T x FZ) then the insemination from Gudali Zebu cows which have sperm from Montbeliard (MB x GZ) have lead the fresh new precocious crossbreed cows.
One particular precocious heifers calved contained in this 2 yrs ( months)
Dining table 1: Decades initially calving (months) centered on crossbreeding type in milk cows facilities in the area out of Bobo-Dioulasso inside the Burkina Faso
The research focused on the brand new reproduction tabs on twenty (20) hybrid cows resulting from the fresh interbreeding from the artificial insemination between local reproduce cows (Gudali Zebu and you may Fulani Zebu) and you may amazing reproduce bulls (Holstein, Alps Brown, Tarentaise, Montbeliard). These crossbreeds was in fact created between 1999 and you may 2010 and you will offered its earliest calf anywhere between 2002 and you can 2012 to the about three improved inventory facilities for the urban and you will suburban regions of Bobo-Dioulasso. Every one of these facilities enjoys on the fifty crossbreed cattle in the production. The initial ranch is found in a city, the second 10 Km out from the south leave and the 3rd 60 Km aside at the eastern get-off off Bobo-Dioulasso. Initial surveys anywhere between within these portion assisted to select such around three facilities with a cattle sign in (temperature and you may artificial insemination overseeing sheets). Incidents related to individual monitoring of creature breeding for example calving times, schedules of your own earliest heats and inseminations were filed everyday because of the the fresh cattlemen together with inseminators. The new exploitation of these documents managed to make it you can to decide twenty (20) basic calving’s add up to the original properties. Such facilities is characterized by the presence of forgotten, a beneficial herd health monitoring, a guided breeding function (mostly AI, to own lack of a selected bull), the brand new concentrate provides (thread cake otherwise cottonseed and you will industrial malt) regarding the ration giving and you may intense distribution out of silage and you will farming of the facts. Truly the only purpose of it process variety of is the creation and you can selling from yourself processed whole milk, two times a day (day and you may nights). The newest centers was served on the dogs on their get back off grazing along with this new early morning at the milking time.